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nuka/definition

updated thu 5 jan 12

 

mel jacobson on wed 4 jan 12


a simple definition for those that do not
know what it is:

a white, variegated, ash glaze.
it has a history in japanese wood fired glazes.

there are dozens of variations of this basic white glaze.

we use one that zac loves for basic ware, from mark hewitt
in our wood firings.

if you have a cone 6 electric pottery.
make a white glaze and add 1 percent rutile. + or -
fire it to cone 7.
you get the idea.

it is not a mystery glaze.
mel
it is sort of the opposite of temmoku.
(hundreds of variations.)

from: minnetonka, mn
website: http://www.visi.com/~melpots/
clayart link: http://www.visi.com/~melpots/clayart.html

Lee on wed 4 jan 12


On Wed, Jan 4, 2012 at 8:20 AM, mel jacobson wrote:

> if you have a cone 6 electric pottery.
> make a white glaze and add 1 percent rutile. + or -
> fire it to cone 7.
> you get the idea.

Actually, unlike most white glazes, the color does not come from metal
oxides, but form a saturation of silica. It is a glaze that gives
folks like RR hiccups. ;^) I would suggest trying to incease the
frit in the synthetic glaze to get a cone 6. Do a lineblend. The
original is fired to cone 8

I've used Leach White over Tenmoku, but it is stiffer and while it
has some movement like Nuka, it is nowhere as nice. See for yourself
below.

You can see it applied over tenmoku here:
http://images21.fotki.com/v760/photos/1/199764/814063/AUT_0020-vi.jpg

> it is sort of the opposite of temmoku.
> (hundreds of variations.)

Any silica saturated white will have similar qualities. It is unique
in the unusual way it gets its color. Chun is another example of a
glaze that gets its color in a non-typical way.
Folks asked in private email for the tenmoku recipe in the glaze
pictured above. Here is one below:

Temmoku cone 9-10

Whiting 17
Custer 33
EPK 10
Flint 40

R.Iron Ox 11

--
=3DA0Lee Love in Minneapolis
http://mingeisota.blogspot.com/

=3DA0"Ta tIr na n-=3DF3g ar chul an tI=3D97tIr dlainn trina ch=3DE9ile"=3D9=
7that is, =3D
"The
land of eternal youth is behind the house, a beautiful land fluent
within itself." -- John O'Donohue

Steve Mills on wed 4 jan 12


Lee,=3D20
what is the iron content of the clay you use/used that Tenmoku on?

Steve M


Steve Mills
Bath
UK
Sent from my iPod

On 4 Jan 2012, at 16:00, Lee wrote:

> On Wed, Jan 4, 2012 at 8:20 AM, mel jacobson wrote:
>=3D20
>> if you have a cone 6 electric pottery.
>> make a white glaze and add 1 percent rutile. + or -
>> fire it to cone 7.
>> you get the idea.
>=3D20
> Actually, unlike most white glazes, the color does not come from metal
> oxides, but form a saturation of silica. It is a glaze that gives
> folks like RR hiccups. ;^) I would suggest trying to incease the
> frit in the synthetic glaze to get a cone 6. Do a lineblend. The
> original is fired to cone 8
>=3D20
> I've used Leach White over Tenmoku, but it is stiffer and while it
> has some movement like Nuka, it is nowhere as nice. See for yourself
> below.
>=3D20
> You can see it applied over tenmoku here:
> http://images21.fotki.com/v760/photos/1/199764/814063/AUT_0020-vi.jpg
>=3D20
>> it is sort of the opposite of temmoku.
>> (hundreds of variations.)
>=3D20
> Any silica saturated white will have similar qualities. It is unique
> in the unusual way it gets its color. Chun is another example of a
> glaze that gets its color in a non-typical way.
> Folks asked in private email for the tenmoku recipe in the glaze
> pictured above. Here is one below:
>=3D20
> Temmoku cone 9-10
>=3D20
> Whiting 17
> Custer 33
> EPK 10
> Flint 40
>=3D20
> R.Iron Ox 11
>=3D20
> --
> Lee Love in Minneapolis
> http://mingeisota.blogspot.com/
>=3D20
> "Ta tIr na n-=3DC3=3DB3g ar chul an tI=3DE2=3D80=3D94tIr dlainn trina ch=
=3DC3=3DA9ile"=3DE2=3D
=3D80=3D94that is, "The
> land of eternal youth is behind the house, a beautiful land fluent
> within itself." -- John O'Donohue

Lee on wed 4 jan 12


On Wed, Jan 4, 2012 at 12:51 PM, Steve Mills
wrote:
> Lee,
> what is the iron content of the clay you use/used that Tenmoku on?
On this pot:

http://images21.fotki.com/v760/photos/1/199764/814063/AUT_0020-vi.jpg

It is pretty low in iron and high in alumina. It is old style
shigaraki clay with feldspar stones in it.

--
=3DA0Lee Love in Minneapolis
http://mingeisota.blogspot.com/

=3DA0"Ta tIr na n-=3DF3g ar chul an tI=3D97tIr dlainn trina ch=3DE9ile"=3D9=
7that is, =3D
"The
land of eternal youth is behind the house, a beautiful land fluent
within itself." -- John O'Donohue